/*
 * Copyright (c) 2020, 2020, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.oracle.svm.hosted.agent;

import java.util.HashSet;
import java.util.Set;

import com.oracle.svm.core.util.UserError;

public class TracingAdvisor {

    private final Set<String> classesForInitializationTracing = new HashSet<>();
    private final Set<String> classesForObjectInstantiationTracing = new HashSet<>();

    public TracingAdvisor(String options) {
        String[] optionPairs = options.split(",");
        for (String option : optionPairs) {
            String[] optionKeyValue = option.split("=");
            if (optionKeyValue.length != 2) {
                throw UserError.abort("AgentTracingAdvisor: Option must be in format <option>=<val>: " + option);
            }
            if (optionKeyValue[0].equals("c")) {
                classesForInitializationTracing.add(optionKeyValue[1]);
            } else if (optionKeyValue[0].equals("o")) {
                classesForObjectInstantiationTracing.add(optionKeyValue[1]);
            } else {
                throw UserError.abort("AgentTracingAdvisor: Unknown option: " + optionKeyValue[0]);
            }
        }
    }

    public boolean shouldTraceClassInitialization(String className) {
        return className != null && classesForInitializationTracing.contains(className);
    }

    public boolean shouldTraceObjectInstantiation(String className) {
        return className != null && classesForObjectInstantiationTracing.contains(className);
    }

}
